Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

Akkus, Merve; Bahçegül, Erinç; Özkan, Necati; Bakır, Ufuk

doi:10.1039/c4ra10478a

Cited by 13 publications

(7 citation statements)

References 37 publications

(68 reference statements)

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“…Although the vast majority of materials in the packaging industry are produced by thermal processing, research literature on hemicellulose‐based films is exclusively focused on casting techniques with a few exceptions. Heat treatments usually increase crystallinity of cellulose and produce crosslinking of lignin, which might improve the film forming and materials properties of carbohydrate‐based films. On the other hand, relatively high temperature treatments during thermal processing might reduce the molecular weight of the hemicellulosic components.…”

Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

“…On the other hand, relatively high temperature treatments during thermal processing might reduce the molecular weight of the hemicellulosic components. Recently, a study on the influence of different thermal treatments on corn cob extracted AX revealed interesting improvements in the materials properties of the films . The AX was extruded at 90°C, thermally annealed for 1 h at different temperatures and then conditioned for 7 days at room temperature and controlled humidity.…”

Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

“…Moreover, the thermally annealed films showed less sensitivity to humidity. The differences were ascribed to the decrease in water content and its concomitant plasticizing effect . Again, the use of enzymatic treatments could be a complementary tool of interest, as it has been reported that debranching of AX also increases thermal stability while decreasing water sensitivity …”

Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

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Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Martínez‐Abad

Ruthes

Vilaplana

2015

J of Applied Polymer Sci

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On the use of tris(nonylphenyl) phosphite as a chain extender in melt-blended poly(hydroxybutyrate-co-hydroxyvalerate)/ clay nanocomposites: Morphology, thermal stability, and mechanical properties J. González-Ausejo, E. Sánchez-Safont, J. Gámez-Pérez and L. Cabedo, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Characterization of polyhydroxyalkanoate blends incorporating unpurified biosustainably produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) A. Martínez-Abad, L. Cabedo, C. S. S. Oliveira, L. Hilliou, M. Reis and J. M. Lagarón, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Modification of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) properties by reactive blending with a monoterpene derivative L. Pilon and C. Kelly, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) films for food packaging: Physical-chemical ABSTRACT: Plant polysaccharides comprise the main renewable resource available in the biosphere for biomaterial production. However, the recalcitrant and heterogeneous structure of lignocellulosic biomass hinders the effective fractionation and exploitation of the polysaccharide components for the design of carbohydrate-based materials. Carbohydrate-active enzymes constitute a selective and versatile biotechnological tool that can assist during the biomass pretreatment steps to extract and fractionate the polysaccharide macromolecular components. Moreover, this enzymatic toolbox can be as well exploited for the tailored modification of the molecular structure of relatively pure polysaccharide components to achieve customized macroscopic properties. This review critically discusses the potential and challenges of the use of plant lignocellulosic polysaccharides and enzymatic modifications to design and prepare suitable materials for packaging applications in terms of their structure-property relations. Structural factors such as the molar mass and crystallinity of the polysaccharide fractions and functional factors such as water sensitivity and processability of the derived films are critical for the material performance. The global net primary production of carbon in the biosphere is estimated around 10 11 tonnes per year, 1 from which polysaccharides account for approximately 75% of all biomass. In this context, plant biomass represents the main renewable resource for biofuel and materials production, as a future replacement of fossil-based energy and goods. New schemes for the sustainable exploitation of biomass have emerged in the last decades (the "biorefinery" concept), which integrate chemical, mechanical, thermal, and biotechnological conversion processes for the generation of energy, platform chemicals, and bio-based polymeric materials. Different generations of biorefineries have been implemented, depending on the biomass source (e.g., agriculturederived crops and food waste, lignocellulosic biomass, marine feedstock, designer crops) and on the diversity of products that are converted (e.g., bioethanol after fermentation, syngas after thermochemical conversion, fin...

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Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

Section: Applications Of Plant Polysaccharide Materials In the Packagmentioning

confidence: 99%

See 1 more Smart Citation

Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Martínez‐Abad

Ruthes

Vilaplana

2015

J of Applied Polymer Sci

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“…Basically, all thermal modifications of wood at temperatures above 100 °C, but especially above 150 to 170 °C, cause certain changes in its chemical structure. These changes are reflected in changes in its properties (Kacikova et al 2013, Akkus et al 2014, Zawadzki et al 2016.…”

Section: Introductionmentioning

confidence: 99%

Tectona grandis Linn. and its Fire Characteristics Affected by the Thermal Modification of Wood

Čekovská¹,

Gaff²,

Osvaldová³

et al. 2017

BioResources

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a After a long absence, tropical wood species are beginning to be applied in the production of interior elements and construction once again. Due to their positive reaction to thermal treatment, they are increasingly subjected to such processes. Tropical hard wood, in spite of some deficiencies of mechanical properties, are still better than softwoods. Another advantage of this wood is its higher durability in comparison with softwoods. However, there is a lack of knowledge about the properties of treated tropical wood species. Specifically, little is known about their reaction to fire, which is necessary in the application of this wood. This study investigated the effects of thermal treatment of Teak (Tectona grandis Linn) wood on selected burning characteristics. Results obtained from raw (untreated) wood test specimens were compared with results obtained from test specimens subjected to thermal treatment at 160 °C, 180 °C, and 210 °C. The monitored characteristics were weight loss and the burn rate. The thermal treatment of teak wood significantly increased its flammability and accelerated its combustion. In addition, its burn rate was higher than in untreated wood, reflecting that it is necessary to add fire retardants to thermally-treated teak wood.

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“…This interest aroused due to reduced production of durable wood material, an increased interest in durable construction material and legislative changes, which restrict the use of toxic substances. At present, the largest commercial importance is represented, in particular, by five different modifications, one in Finland, the Netherlands (Plato wood) and Germany (oil heat, OHT) [1]- [4].…”

Section: Introductionmentioning

confidence: 99%

Retardation Effect on Thermally-Modified Spruce Wood

Osvaldová

Gaff

2017

WIT Transactions on Ecology and the Environment

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The subject matter of this paper is spruce wood (Picea abies L.). The thermal treatment of wood (thermal wood) is a new technology of wood treatment, improving its physical and biological properties and increasing its resistance to biological wood-destroying agents and atmospheric effects. Its fire and technical properties, capability to set it on fire and burn it have been studied less. Research in the aforementioned subject is the subject matter of this paper, together with an option to treat this thermally treated wood with a standard commercial retardant. Experimental equipment was non-standardized laboratory equipment using a flame source of higher intensity (flame burner -propane-butane) affecting the test sample in an open environment. This is a simulation of actual fire. The evaluative criteria for both tests, thermally treated wood (20°C, 160°C, 180°C, 210°C) without retardant treatment and with retardant treatment, were weight loss and burning rate. The data results are presented in the tables and diagrams and are statistically evaluated. The aforementioned results will be used for the complex evaluation of spruce wood treated this way and a new view will be taken on wood treated this way from a fire prevention point of view.

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Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

Cited by 13 publications

References 37 publications

Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Tectona grandis Linn. and its Fire Characteristics Affected by the Thermal Modification of Wood

Retardation Effect on Thermally-Modified Spruce Wood

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